Non-Rechargeable batteries:

Alkaline Batteries:The Alkaline
battery is a very popular one, mostly known by it sizes
AA, AAA, C, D and 9v.

In technical side, Alkaline batteries are a mixture
of manganese dioxide, graphite, and
electrolyte.Combined, they provide higher energy output
than traditional Heavy Duty, which is made of manganese
dioxide, carbon black (for electrical conductivity and
moisture absorption), and zinc chloride electrolyte
(which assists the chemical reaction). Normally,
Alkaline batteries last up 3 times longer than Heavy
Duty ones.

Lithium Batteries:The lithium
battery is a standard for high performance batteries for
several years having an excellent power density and long
shelf life. Is very popular in its versions: coin type
(CR2032, CR2016, CR2016, etc), for uses in calculators,
watches, computers, etc, and cylindrical batteries: for
flashes of photo cameras (CR123, CR-2, CR-V3, CR-P2,
2CR-5), etc.

Silver Oxide Batteries:This
battery is mostly used for watches coming in button
size. Normally, the same sizes are manufactured in
alkaline version, but is not good idea to install
alkaline battery in a watch unless the watch is a very
cheap digital one. The most used size is the SR626SW,
also called 377. The silver oxide batteries have
normally 1.55 volts.

Alkaline button Cells:This kind
of batteries, is not so powerful like its silver oxide
version and is cheaper. It can be found in cheap digital
watches, calculators, laser pointers, and other devices.
The most popular one is the AG-13, also called
LR-44.

Zinc-Air Batteries:This kind of
batteries, with a voltage of 1.15-1.35 volts, is mostly
used for hearing-aids applications, pagers and general
medical uses. As zinc air batteries contains more than
1% of mercury is important to recycle after use it.

Rechargeable batteries:

Nickel Cadmium Batteries:You ll
find it as “Ni-Cd”. These batteries are formed by nickel
hydroxide, potassium hydroxide and metalic cadmium. The
Ni-Cd battery was the first popular rechargeable one and
is today s market, the cheapest rechargeable battery..
Is ideal for low-draining devices as clocks,
flashlights, T.V. remote controls, RC vehicles, etc.
This battery has “memory effect” so is important to
fully discharge it before charging in order to not lose
it capacity and get less run time in between charges.
Finally, the cadmium is a toxic metal and is harmful for
the environment so it s very important to recycle the
batteries. You can find the Ni-Cd batteries in different
sizes as AA, AAA, C, Sub C, D, 9v, etc as in many
different battery packs.

Nickel Metal Batteries:The Ni-Mh
battery is a newer battery generation having longer life
than Ni-Cd ones, and is ideal for using in high draining
devices like digital cameras, walkie talkies, cellular
phones, walkmans, discmans, shavers, etc. You can find
in AA, AAA, C, Sub C, D, 9v, A, N sizes as in different
kind of battery packs. These batteries have no “Memory
effect”,

Lithium Ion batteries:The
lithium ion battery produces the same energy of Ni-MH
but weighs less and is smaller. Regarding the price,
Li-Ion battery is more expensive. Mostly used in new
electronic devices, you can see li-ion battery packs in
new models of cellular phones, camcorders and notebooks.
Each day you can see more and more models of cell phones
batteries, video batteries and laptops batteries made
with li-ion cells. It became popular for that devices as
the battery makes up an important portion of the total
weight in them, so using lithium ion batteries, the
devices are lighter in weight and no need to have big
size. Li-Ion batteries require a Li-Ion charger. Don t
use a different charger as it can cause the batteries to
explode.